NMR assignment of intrinsically disordered self-processing module of the FrpC protein of Neisseria meningitidis
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
26138689
DOI
10.1007/s12104-015-9625-z
PII: 10.1007/s12104-015-9625-z
Knihovny.cz E-resources
- Keywords
- FrpC, Intrinsically disordered proteins, Neisseria meningitidis, Resolution-enhanced spectroscopy, Resonance assignment, Self-processing module, Sparse sampling,
- MeSH
- Bacterial Proteins chemistry MeSH
- Membrane Proteins chemistry MeSH
- Neisseria meningitidis metabolism MeSH
- Nuclear Magnetic Resonance, Biomolecular * MeSH
- Protein Structure, Secondary MeSH
- Intrinsically Disordered Proteins chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Bacterial Proteins MeSH
- frpC protein, Neisseria meningitidis MeSH Browser
- Membrane Proteins MeSH
- Intrinsically Disordered Proteins MeSH
The self-processing module (SPM) is an internal segment of the FrpC protein (P415-F591) secreted by the pathogenic Gram-negative bacterium Neisseria meningitidis during meningococcal infection of human upper respiratory tract. SPM mediates 'protein trans-splicing', a unique natural mechanism for editing of proteins, which involves a calcium-dependent autocatalytic cleavage of the peptide bond between D414 and P415 and covalent linkage of the cleaved fragment through its carboxy-terminal group of D414 to [Formula: see text]-amino group of lysine residue within a neighboring polypeptide chain. We present an NMR resonance assignment of the calcium-free SPM, which displays characteristic features of intrinsically disordered proteins. Non-uniformly sampled 5D HN(CA)CONH, 4D HCBCACON, and HCBCANCO spectra were recorded to resolve poorly dispersed resonance frequencies of the disordered protein and 91 % of SPM residues were unambiguously assigned. Analysis of the chemical shifts revealed that two regions of the intrinsically disordered SPM (A95-S101 and R120-I127) have a tendency to form a helical structure, whereas the residues P1-D7 and G36-A40 have the propensity to adopt a [Formula: see text]-structure.
CEITEC Masaryk University Kamenice 5 62500 Brno Czech Republic
Institute of Microbiology of the ASCR v v i Vídeňská 1083 14220 Prague 4 Czech Republic
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